What two numbers multiply to -630 and add up to 99?

Here we answer the question: "What two numbers multiply to -630 and add up to 99?"

The answer to your question is:

-6 and 105

Below we illustrate and prove that -6 and 105 multiply to -630 and add up to 99:

-6 × 105 = -630
-6 + 105 = 99

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 99x - 630 = 0

If so, the solution to factor the quadratic equation above is:

(x - 6 ) (x + 105)

To summarize, since -6 and 105 multiply to -630 and add up 99, you know that the following is true:

x² + 99x - 630 = (x - 6 ) (x + 105)

Multiply To One Number and Add Up To Another
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